Lo! Mike was known long ago.
XF is only his modern persona.
Though fair of face, when roused to full power of divine coding, Mike becomes something Other.
From The Tain. First written c. 12thC but orally transmitted from c. 1stC. (Kenneally trans.)
The first warp-spasm seized Mike, [he] shook like a tree in the flood ...
On his head the temple-sinews stretched to the nape of his neck, each mighty, immense, measureless knob as big as the head of a month-old child...
His mouth weirdly distorted: his cheek peeled back from his jaws until the gullet appeared, his lungs and his liver flapped in his mouth and throat, his lower jaw struck the upper a lion-killing blow ..
The hair of his head twisted like the tange of a red thornbush stuck in a gap; if a royal apple tree with all its kingly fruit were shaken above him, scarce an apple would reach the ground but each would be spiked on a bristle of his hair as it stood up on his scalp with rage power.